Half to william j



( No Model.)-

G. S. SHEPARD.

' STEAM BOILER.

Patented Jan. 5, 1886.

' UNITED STATES PATENT OFFICE.

CHARLES S. SHEPARD, OF CHERRY CREEK, NEW YORK, ASSIGNOR OF ONE- HALF TO WILLIAM J. PHILLIPS, OF SAME PLACE.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 333,685, dated January 5, 1886.

Serial No. 173,720. (No model.)

To all whom it may concern.-

Be it known that 1, CHARLES S. SHEPARD, acitizen of the United States, residing at Cherry Creek, in the county of Chautauqua and State of New York, have invented certain new and useful Improvements in Steam Generators, of which the following is aspecification, reference being had thereinto the accompanying drawings.

The object of this invention is to simplify the construction of such boilers by making the heads of a single casting, and together with a central division plate fastening all together through these heads by long screw-rods; and the invention consists in this and in the divis- 2011 of the boiler, all as fully hereinafter specied.

In the drawings, Figure 1 is an elevation in vertical cross-section of one-half the boiler. Fig. 2 is a top plan; Fig. 3, a top plan of the central plate; Fig. 4, a detail of joint.

A A represent the two heads or ends of the boiler, both alike. On the inner faces are circular grooves a a, (shown in dotted lines, Fig. 2,) and circles,'Fig. 8, each groove made V- shaped, and the ends of the case and fines b beveled to an edge to fit therein, having interposed packing c, Fig. 4, to make the joints steam-tight. Theseheads A A are madein one piece, and have a rim, (1, extending beyond the boiler or case. Through this rim all around are set long rods f f, with heads j" at one end, and screw-threads and aunt, g, at the other end.

The boiler is divided into two parts bya division-plate, A, having the same circular V- grooves therein as in the heads, in which the walls of the case and fines b b I) set. (See Fig. 1.) After setting the heads and central casting in place, the nuts 9 g are screwed up until a steam tight connection is made all around.

B represents the lower central heating space above the usual base, 0, and grate.

i is the water-space between the case b and wall I).

In the division-plate A is a central opening, h, leading into a smaller heating space, B, above, with larger water-space, 2', than that below, and by openings it (see Figs. 1 and 3) the water and steam are forced up through the lower, t, space into the upper, 2', space. This arrangement gives a quicker result, as, the fire-space B being larger than the waterspace i, the water is quickly heated and steam quickly generated, and, forcing itself through the openings It It, soon, by the aid ofthe upper heating space, R, converts the whole into steam. The division -plate A greatly aids this; but it also prevents burning out the top plate, A,a serious troublein small agricultural boilers. Another advantage of this construction is that the parts when destroyed can be easily replaced without special skill, and put together by merely unscrewing and screwing up the rods f f. Other boilers have to be sent to a shop, or else entirely cast aside as useless.

D represents the smoke stack. p is the steam-pipe leading to a barrel, &c., for steaming feed, &c.

The device will be supplied with a steamgage, water-gages, a lower pipe to draw ofi water, and a water-opening to fill the boiler; but as such are old I do not further particularize them.

I claim- 1. In a steam generator, in combination with the walls, case, and fines, constructed substantially as described, the cast iron flat disks or heads A A, having circular V-shaped grooves therein for the reception of the ends of the case and fines, the rims a a, projecting beyond the walls of the case, and all the parts held together by the screw-rods f f, passing through said rims outside of the case, all arranged as and for the purpose specified.

2. In asteam-generator, the combination of the heads A A, screw-rods ff, outer shell, b, fines b b, and the division-plate A, the latter having the circular grooves a a, the central opening, it, and steam and water openings It It, all substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES S. SHEPARD.

Witnesses:

J. B. DRAKE, T. H. Pansons. 

